vertical header layout under firefox and ext 4.1.1

Hello,
Under Firefox and ExtJS 4.1.1 vertical headers are not properly displayed. (text in example should be: "Formularz pracownika".

I couldnt find related thread so i start a new one.

What can be done to fix it?

Attachment 37895

to reproduce: (FireFox & ExtJS 4.1.1)

Code:

---

new Ext.Window({
autoShow:true,
width:200,
height:200, 
headerPosition:'right',
title:'Formularz pracownika', 
collapsed:true,
collapsible:false
});

---

Looks like a dupe: http://www.sencha.com/forum/showthre...ying-Correctly

FF14 has introduced a change in behaviour with regards to some of the drawing stuff.